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break-in

  1. Break-in procedure question

    Classic Tech
    Hey guys, So I'm putting in the rebuilt 289 in my 66 tomorrow and I know the procedure for how to break in the cam but I've got a question. Not only is the engine rebuilt, but the pumpkin in the rear is new also and that has its own break in procedure. I've heard that after breaking in the...
  2. 5.0 new motor break in

    5.0L Tech
    I started my mustang for the first time today since I put a new motor. Its a 5.0 roller motor and its either brand new or factory refurbished I think. Cobra intake GT40 or GT40p heads (I think, could be E40 or something weird) HO cam Full exhaust, no cats, no EGR no smog pump, no A/C. 5-speed...
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